A151820 a(n) = A162391(n)^2.

1, 144, 441, 36864, 86436, 6431296, 6964321, 15233409, 23658496, 28536964, 38962564, 53319204, 62948356, 64368529, 84529636, 94303521, 148011556, 429276961, 515108416, 674129296, 2687074569, 2751317209, 3719170225, 4786702596, 4877206569, 4897760256, 5874762609

Offset

1,2

Links

Michael S. Branicky, Table of n, a(n) for n = 1..10000 (terms 1..417 from Chai Wah Wu)

Prog

(Python)
from math import isqrt
def agen(LIMIT): # generator of terms less than LIMIT
    fibs = set()
    f, g = 1, 2
    while f <= LIMIT:
        fibs.add("".join(sorted(str(f))))
        f, g = g, f+g
        r = s = 1
    r = s = 1
    while s <= LIMIT:
        if "".join(sorted(str(s))) in fibs: yield s
        r += 1
        s = r*r
print(list(agen(10**10))) # Michael S. Branicky, Feb 18 2024

Crossrefs

Cf. A162391.

Sequence in context: A250787 A188246 A258382 * A322905 A281240 A014770

Adjacent sequences: A151817 A151818 A151819 * A151821 A151822 A151823

Keyword

nonn

Author

Claudio Meller, Jul 02 2009

Extensions

More terms from Chai Wah Wu, Dec 22 2016

Status

approved