A380225 Numbers k > 0 such that both |b(k) - b(k-1)| and |b(k+1) - b(k)| are greater than 1, where b is A377091.

21, 32, 43, 52, 74, 91, 112, 133, 147, 161, 162, 184, 211, 212, 242, 243, 273, 308, 343, 381, 422, 463, 464, 508, 509, 553, 554, 602, 651, 652, 653, 678, 704, 758, 759, 760, 761, 813, 814, 815, 816, 820, 821, 822, 828, 872, 873, 931, 932, 938, 966, 998

Offset: 1

Author

Paolo Xausa, Jan 18 2025

Keywords

• nonn

Links

• Paolo Xausa, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A377091, A379880, A380223, A380224.

Formula

A377091(a(n)) = A380224(n).