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A022908
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The sequence M(n) in A022905.
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2
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0, 2, 5, 11, 20, 35, 56, 86, 125, 179, 248, 338, 449, 590, 761, 971, 1220, 1523, 1880, 2306, 2801, 3386, 4061, 4847, 5744, 6782, 7961, 9311, 10832, 12563, 14504, 16694, 19133, 21875, 24920, 28322, 32081, 36266, 40877, 45983, 51584
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
J. M. Dover, On two OEIS conjectures
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FORMULA
| n + sum(k=1, n-1, A022907(n)), n>1.
a(1) = 0; a(n) = (1+3*A033485(2*n-3))/2 = A022905(n-1)+1, n>1 . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), May 30 2006
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CROSSREFS
| Sequence in context: A033263 A139482 A038377 * A026390 A005575 A050407
Adjacent sequences: A022905 A022906 A022907 * A022909 A022910 A022911
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KEYWORD
| nonn
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu)
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EXTENSIONS
| Corrected broken URL as proposed by J. Gardiner - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 24 2010
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