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A218488 Positive numbers differing from next 4 greater squares by squares. 4
60480, 2851200, 13366080, 42134400, 93139200, 588107520, 684391680, 1210809600, 10534043520, 16817673600, 38694427200, 52143537600, 54939044160, 59580892800, 89555155200, 104432328000, 136734998400, 356676566400, 663924381120, 1100581171200, 1200474475200 (list; graph; refs; listen; history; text; internal format)
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

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Last modified November 28 04:31 EST 2021. Contains 349400 sequences. (Running on oeis4.)