A337916 Numbers k such that four (or more) consecutive Ramanujan tau numbers are congruent mod 691, or A000594(k) == A000594(k+1) == A000594(k+2) == A000594(k+3) mod 691, or A046694(k) = A046694(k+1) = A046694(k+2) = A046694(k+3).

1409635, 74627996, 98011434, 109454388, 153236152, 191545190, 392460356, 427203833, 497768756, 504982791, 538208841, 538565394, 541301742, 549096232, 590970836, 591800035, 623392556, 660872395, 698269314, 779613836, 796944116, 839316232, 884093036, 1045217422, 1118176194

Offset

1,1

Comments

The corresponding Ramanujan tau numbers mod 691 are listed in A337917(n) = A046694(a(n)). See A121742 for more information.

Links

Jud McCranie, Table of n, a(n) for n = 1..1419

Eric Weisstein's World of Mathematics, Tau Function.

Example

Ramajuan tau A000594(1045217422) == A000594(1045217423) == A000594(1045217424) == A000594(1045217425) == 269, so 1045217422 is in the sequence.

Crossrefs

Cf. A121742, A337917, A000594, A046694, A121733, A121734, A121743.

Sequence in context: A022209 A203883 A352611 * A064871 A237397 A301557

Adjacent sequences: A337913 A337914 A337915 * A337917 A337918 A337919

Keyword

nonn

Author

Jud McCranie, Nov 02 2020

Status

approved