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A117693 Row sums of A117692. 0
1, 6, 42, 27, 480, 265, 7070, 3815, 1820, 1449, 107338, 56903, 4636632, 2635061, 993850, 633919, 71014372, 42899857, 8111619802, 4675943415, 1414861448, 819657397, 113827776894, 75106291091, 41292848428 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..25.

FORMULA

a(n) = sum_{m=1..n} A117692(n,m).

MATHEMATICA

f[n_] := If[PrimeQ[n] == True, n, 1] cf[0] = 1; cf[n_Integer?Positive] := cf[n] = f[n]*cf[n - 1] bf[n_Integer?Positive, m_Integer?Positive] := bf[n, m] = cf[n]^2/(cf[m]*cf[n - m]) b = Table[Table[bf[n, m], {m, 1, n}], {n, 1, 10}] Flatten[b] c = Table[Apply[Plus, Table[bf[n, m], {m, 1, n}]], {n, 1, 25}]

CROSSREFS

Cf. A034386.

Sequence in context: A249135 A250387 A306429 * A153243 A186885 A097253

Adjacent sequences:  A117690 A117691 A117692 * A117694 A117695 A117696

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Apr 12 2006

EXTENSIONS

Description simplified, offset corrected by the Assoc. Eds. of the OEIS, Jun 27 2010

STATUS

approved

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Last modified August 11 18:37 EDT 2020. Contains 336428 sequences. (Running on oeis4.)