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A097799 Number of partitions of the n-th deficient number into deficient numbers. 3
1, 2, 3, 5, 7, 14, 20, 27, 37, 49, 85, 111, 143, 184, 234, 374, 585, 727, 899, 1360, 1664, 2028, 2985, 4343, 5218, 6252, 7474, 8913, 12591, 14918, 17639, 24519, 33836, 39646, 46377, 54165, 63162, 85507, 99276, 115103, 133276, 154116, 205308, 272190 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, Deficient Number

Eric Weisstein's World of Mathematics, Partition

MATHEMATICA

n = 60; d = Select[Range[n], DivisorSigma[1, #] < 2 # &]; CoefficientList[ Series[1/Product[1 - x^d[[i]], {i, 1, Length[d]}], {x, 0, n}], x][[d + 1]] (* Amiram Eldar, Aug 02 2019 *)

CROSSREFS

Cf. A005100, A000041, A097797, A097800.

Sequence in context: A260523 A114625 A046808 * A005629 A028304 A324840

Adjacent sequences:  A097796 A097797 A097798 * A097800 A097801 A097802

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Aug 25 2004

STATUS

approved

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Last modified October 26 02:14 EDT 2021. Contains 348256 sequences. (Running on oeis4.)