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A332984 Triangular numbers also sum of two nonzero pentagonal numbers. 2
6, 10, 36, 105, 528, 595, 861, 903, 1081, 1128, 1225, 1431, 1711, 2016, 2211, 2278, 2415, 2556, 2926, 3160, 3403, 3741, 4005, 4095, 5050, 5151, 5253, 6105, 6441, 6903, 7750, 8385, 10011, 11476, 12720, 14196, 15400, 15931, 16836, 17391, 18528, 19110 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Peter Kagey, Table of n, a(n) for n = 1..1000

EXAMPLE

    6 =  1 +  5;

   10 =  5 +  5;

   36 =  1 + 35;

  105 = 35 + 70.

CROSSREFS

A subset of A000217 (triangular numbers) and of A332987 (sums of two nonzero pentagonal numbers).

Cf. A000326 (pentagonal numbers).

Sequence in context: A068889 A203485 A221519 * A038264 A094890 A213477

Adjacent sequences:  A332981 A332982 A332983 * A332985 A332986 A332987

KEYWORD

nonn,easy

AUTHOR

Olivier Gérard, Mar 05 2020

STATUS

approved

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Last modified July 4 15:25 EDT 2020. Contains 335448 sequences. (Running on oeis4.)