login
A138728
Array read by rows: row n lists n-th even superperfect number A061652(n), n-th Mersenne prime A000668(n) and n-th perfect number A000396(n).
0
2, 3, 6, 4, 7, 28, 16, 31, 496, 64, 127, 8128, 4096, 8191, 33550336, 65536, 131071, 8589869056, 262144, 524287, 137438691328, 1073741824, 2147483647, 2305843008139952128, 1152921504606846976, 2305843009213693951
OFFSET
1,1
EXAMPLE
Array begins:
2, 3, 6
4, 7, 28
16, 31, 496
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Apr 07 2008
STATUS
approved