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A262622
Amicable pairs of even numbers.
4
220, 284, 1184, 1210, 2620, 2924, 5020, 5564, 6232, 6368, 10744, 10856, 17296, 18416, 63020, 76084, 66928, 66992, 79750, 88730, 122368, 123152, 141664, 153176, 142310, 168730, 171856, 176336, 176272, 180848, 185368, 203432, 196724, 202444, 280540, 365084, 308620, 389924, 319550, 430402, 356408, 399592, 437456, 455344
OFFSET
1,1
COMMENTS
If there are no amicable pairs whose members have distinct parity then this is also the even terms of A259180.
First differs from A063990, A259180, A259933 at a(13).
First differs from A262624 at a(16).
LINKS
PROG
(PARI) listap(nn) = {forstep(n=2, nn, 2, m = sigma(n)-n; if ((m > n) && (n==sigma(m)-m), print1(n, ", ", m, ", ")); ); } \\ Michel Marcus, Nov 14 2015
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Nov 09 2015
STATUS
approved