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A275189
Positions of 4 in A274640.
8
3, 6, 10, 23, 29, 36, 97, 108, 185, 199, 252, 310, 337, 404, 424, 446, 618, 631, 707, 833, 848, 905, 1000, 1097, 1196, 1253, 1269, 1378, 1511, 1552, 1796, 1815, 2014, 2060, 2363, 2589, 2640, 2692, 2928, 3179, 3261, 3554, 3673, 3768, 3829, 4370, 4504, 4707
OFFSET
1,1
FORMULA
A274640(a(n))=4.
KEYWORD
nonn
AUTHOR
Zak Seidov, Jul 19 2016
STATUS
approved