A218488 Positive numbers differing from next 4 greater squares by squares.

60480, 2851200, 13366080, 42134400, 93139200, 588107520, 684391680, 1210809600, 10534043520, 16817673600, 38694427200, 52143537600, 54939044160, 59580892800, 89555155200, 104432328000, 136734998400, 356676566400, 663924381120, 1100581171200, 1200474475200

Offset

1,1

Links

Donovan Johnson, Table of n, a(n) for n = 1..84 (terms < 10^18)

E. J. Barbeau, Numbers differing from consecutive squares by squares, Canad. Math. Bull. 28(1985), pp. 337-342.

Example

60480 = 246^2 - 6^2 = 247^2 - 23^2 = 248^2 - 32^2 = 249^2 - 39^2.

Crossrefs

Cf. A218485, A218486, A218487.

Sequence in context: A075671 A186556 A205983 * A257754 A234767 A186061

Adjacent sequences: A218485 A218486 A218487 * A218489 A218490 A218491

Keyword

nonn

Author

Michel Marcus, Oct 30 2012

Extensions

a(9)-a(21) from Donovan Johnson, Oct 31 2012

Status

approved