A137898 - OEIS

A137898

Limiting sequence when we start with positive integers (A000027) and at step n >= 1 add to the term at position n + a(n) the value of the term at position n+a(n)+1.

1, 5, 3, 4, 5, 21, 15, 17, 9, 21, 11, 12, 13, 14, 15, 16, 17, 37, 19, 20, 21, 68, 23, 75, 51, 81, 55, 57, 29, 93, 63, 65, 33, 69, 35, 36, 37, 77, 39, 81, 41, 85, 43, 44, 45, 93, 47, 48

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..48.

FORMULA

Limiting sequence when we start with positive integers (A000027) and at step n >= 1 add to the term at position n + a(n) the value of the term at position n+a(n)+1.

CROSSREFS

Cf. A000027, A136119, A137319, A137417, A137418, A136259, A136272.

Sequence in context: A171545 A214030 A389137 * A020854 A198678 A021191

Adjacent sequences: A137895 A137896 A137897 * A137899 A137900 A137901

KEYWORD

easy,nonn

AUTHOR

Ctibor O. Zizka, Apr 30 2008

EXTENSIONS

Entries corrected and extended by Paolo P. Lava, Mar 10 2009

STATUS

approved