A368073 Number of representations of n as the difference of two positive square pyramidal numbers.

0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1

Offset

1,25

Links

Table of n, a(n) for n=1..100.

Eric Weisstein's World of Mathematics, Square Pyramidal Number

Example

a(25) = 2: 25 = 30 - 5 = 55 - 30.

Crossrefs

Cf. A000330, A100073, A296338, A368072.

Sequence in context: A376514 A335460 A367077 * A086071 A322212 A089813

Adjacent sequences: A368070 A368071 A368072 * A368074 A368075 A368076

Keyword

nonn

Author

Ilya Gutkovskiy, Dec 10 2023

Status

approved