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A120246 a(1) = 1. a((m(m+1)/2 +k) = m + a(k), 1 <= k <= m+1, m >= 1. 2
1, 2, 3, 3, 4, 5, 4, 5, 6, 6, 5, 6, 7, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 9, 10, 11, 10, 8, 9, 10, 10, 11, 12, 11, 12, 9, 10, 11, 11, 12, 13, 12, 13, 14, 10, 11, 12, 12, 13, 14, 13, 14, 15, 15, 11, 12, 13, 13, 14, 15, 14, 15, 16, 16, 15, 12, 13, 14, 14, 15, 16, 15, 16, 17, 17, 16, 17, 13 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..79.

CROSSREFS

Cf. A120244, A120245.

Sequence in context: A106500 A280315 A120245 * A120244 A094727 A089308

Adjacent sequences:  A120243 A120244 A120245 * A120247 A120248 A120249

KEYWORD

easy,nonn

AUTHOR

Leroy Quet, Jun 12 2006

EXTENSIONS

Extended by Ray Chandler, Jun 19 2006

STATUS

approved

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Last modified September 28 04:37 EDT 2020. Contains 337392 sequences. (Running on oeis4.)