A121996 - OEIS

A121996

Sums of two squares mod 100.

0, 1, 2, 4, 5, 8, 9, 10, 13, 16, 17, 18, 20, 21, 22, 24, 25, 26, 28, 29, 30, 32, 33, 34, 36, 37, 38, 40, 41, 42, 44, 45, 46, 48, 49, 50, 52, 53, 54, 56, 57, 58, 60, 61, 62, 64, 65, 66, 68, 69, 70, 72, 73, 74, 76, 77, 78, 80, 81, 82, 84, 85, 86, 88, 89, 90, 92, 93, 94, 96, 97, 98

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

All 72 possible values of ((m^2+n^2) mod 100) for all m's and n's. Not-sums of two squares mod 100 are: 3, 6, 7, 11, 12, 14, 15, 19, 23, 27, 31, 35, 39, 43, 47, 51, 55, 59, 63, 67, 71, 75, 79, 83, 87, 91, 95, 99 (28 terms).

Cf. A010461 Squares mod 100, A001481 Sums of 2 squares.

LINKS

Table of n, a(n) for n=1..72.

CROSSREFS

Cf. A010461, A001481.

Sequence in context: A351723 A169612 A084581 * A269176 A091072 A001481

Adjacent sequences: A121993 A121994 A121995 * A121997 A121998 A121999

KEYWORD

fini,full,nonn

AUTHOR

Zak Seidov, Sep 11 2006

STATUS

approved