A381231 Index of first occurrence of -n in A000319, or -1 if -n never appears there.

6, 3, 4, 5, 48, 15642, 14, 87, 924, 23, 1074, 1066, 14524, 7051, 15000, 71709, 57604, 57554, 2056626, 2036049, 16068, 86, 934, 37142, 57439, 72635, 57342, 1394559, 358329, 2112076, 16941, 2015018, 57124, 27572, 1837444, 29, 2058540, 54694, 2075246, 359870, 76579, 7844, 61424, 55065, 61434, 2016279, 71877, 2271483, 305269, 57405, 1842679

Offset: 0

Author

N. J. A. Sloane, Feb 28 2025

Keywords

• nonn

Comments

If a(54) is not -1, then a(54) > 14333074. - Tim Peters, Mar 13 2025

Links

• Tim Peters, Table of n, a(n) for n = 0..53

Crossrefs

Cf. A000319, A381230.

Extensions

a(5)-a(17) from Hugo Pfoertner, Feb 28 2025

a(18)-a(50) from Tim Peters, Mar 01 2025