login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A047965 Coordination sequence T3 for Zeolite Code MSO. 1
1, 4, 12, 21, 32, 51, 80, 110, 132, 164, 212, 263, 304, 343, 406, 480, 542, 598, 668, 759, 844, 919, 1004, 1102, 1206, 1306, 1410, 1521, 1632, 1753, 1882, 2008, 2130, 2262, 2416, 2565, 2698, 2843, 3012, 3184, 3334, 3490, 3678, 3867, 4036, 4207, 4410 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

R. W. Grosse-Kunstleve, Table of n, a(n) for n = 0..1000

R. W. Grosse-Kunstleve, Coordination Sequences and Encyclopedia of Integer Sequences

Sean A. Irvine, Generating Functions for Coordination Sequences of Zeolites, after Grosse-Kunstleve, Brunner, and Sloane

International Zeolite Association, Database of Zeolite Structures

FORMULA

G.f.: (1 + x) * (1 + x + 6*x^2 + 15*x^4 + 3*x^5 + 20*x^6 + 6*x^7 + 21*x^8 + 8*x^9 + 14*x^10 + 11*x^11 + 9*x^12 + 14*x^14 - 11*x^15 + 11*x^16 - 6*x^17 + 2*x^18) / ((1 - x)^3 * (1 + x^2)^2 * (1 + x + x^2 + x^3 + x^4) * (1 + x^3 + x^6)). - Colin Barker, Dec 21 2015

CROSSREFS

Sequence in context: A115106 A270795 A191260 * A329472 A301071 A038430

Adjacent sequences:  A047962 A047963 A047964 * A047966 A047967 A047968

KEYWORD

nonn

AUTHOR

Ralf W. Grosse-Kunstleve

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 30 17:12 EST 2021. Contains 349424 sequences. (Running on oeis4.)