A334982 a(n) is the earliest start of a run of at least n consecutive primes that are also happy numbers.

7, 19, 3067, 3313, 3313, 11550481, 11550481, 475389133, 1128863117, 1175267983, 19507818293, 176622893141, 176622893141, 495495126109, 4411512992681, 122634868247173, 122634868247173

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Shyam Sunder Gupta, Happy Numbers, Exploring the Beauty of Fascinating Numbers, Springer (2025) Ch. 7, 209-222.

Carlos Rivera, Puzzle 1002. Consecutive primes that are also happy numbers, The Prime Puzzles & Problems Connection.

Crossrefs

Cf. A007770.

Sequence in context: A267237 A057866 A329001 * A339698 A301808 A128817

Adjacent sequences: A334979 A334980 A334981 * A334983 A334984 A334985

Keyword

nonn,base,more,changed

Author

Carlos Rivera, May 18 2020

Extensions

a(11)-a(17) from Giovanni Resta, May 23 2020

a(16) corrected by Giovanni Resta, May 30 2020

Status

approved