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A257587 If n = abcd... in decimal, a(n) = a^2-b^2+c^2-d^2+... 2
0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 1, 0, -3, -8, -15, -24, -35, -48, -63, -80, 4, 3, 0, -5, -12, -21, -32, -45, -60, -77, 9, 8, 5, 0, -7, -16, -27, -40, -55, -72, 16, 15, 12, 7, 0, -9, -20, -33, -48, -65, 25, 24, 21, 16, 9, 0, -11, -24, -39, -56, 36, 35, 32 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..62.

CROSSREFS

First 100 terms coincide with those of A177894, but then they diverge.

Cf. A257588, A257796.

Sequence in context: A063462 A098736 A002015 * A257588 A303269 A003132

Adjacent sequences:  A257584 A257585 A257586 * A257588 A257589 A257590

KEYWORD

sign,base

AUTHOR

N. J. A. Sloane, May 10 2015

STATUS

approved

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Last modified May 19 02:29 EDT 2019. Contains 323377 sequences. (Running on oeis4.)