A035073 -id:A035073 - cp's OEIS frontend

A035076 a(n) is root of square starting with digit 9: first term of runs.

30, 95, 300, 949, 3000, 9487, 30000, 94869, 300000, 948684, 3000000, 9486833, 30000000, 94868330, 300000000, 948683299, 3000000000, 9486832981, 30000000000, 94868329806, 300000000000, 948683298051, 3000000000000

Offset: 2

Patrick De Geest, Nov 15 1998

Cf. A067479 (squares), A017936.

Cf. 2: A035069, 3: A035070, 4: A035071, 5: A035072, 6: A035073, 7: A035074, 8: A035075.

Ceiling[Sqrt[9*10^Range[2,30]]] (* Harvey P. Dale, Aug 07 2013 *)

a(n) = ceiling(sqrt(9*10^n)), n > 1.

A045860 Numbers whose square has initial digit '6'.

Original entry on oeis.org

8, 25, 26, 78, 79, 80, 81, 82, 83, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 775, 776, 777, 778, 779, 780, 781, 782, 783, 784, 785, 786, 787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799

Offset: 1

Jeff Burch

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Supersequence of A035073.

Cf. A045789.

Flatten[Table[Range[Ceiling[Sqrt[6*10^n]],Floor[Sqrt[7*10^n]]],{n,5}]] (* Harvey P. Dale, Apr 03 2013 *)

from math import isqrt
def aupto(limit):
    alst, d, end = [], 1, 0
    while end < limit:
        start, end = isqrt(6*10**d) + 1, isqrt(7*10**d-1)
        alst.extend([an for an in list(range(start, end+1)) if an <= limit])
        d += 1
    return alst
print(aupto(799)) # Michael S. Branicky, Aug 25 2021

A067476 Smallest n-digit square starting with 6.

Original entry on oeis.org

64, 625, 6084, 60025, 600625, 6002500, 60000516, 600005025, 6000051600, 60000012601, 600000512409, 6000001260100, 60000004765089, 600000028030404, 6000000011750889, 60000000353550625, 600000001175088900

Offset: 2

Amarnath Murthy, Feb 09 2002

Harvey P. Dale, Table of n, a(n) for n = 2..1000

Cf. A035073 (roots), A045789, A067479 (2..9).

Ceiling[Sqrt[6*10^Range[20]]]^2 (* Harvey P. Dale, Feb 28 2025 *)

for(n=2,21,a=ceil(sqrt(6*10^(n-1)))^2; print(a))

a(n) = ceiling(sqrt(6*10^(n-1)))^2, n>1. - Rick L. Shepherd, Feb 18 2002

More terms from Rick L. Shepherd, Feb 18 2002

cp's OEIS Frontend

A035076 a(n) is root of square starting with digit 9: first term of runs.

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A045860 Numbers whose square has initial digit '6'.

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A067476 Smallest n-digit square starting with 6.

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